Migrate from adopt

https://github.com/actions/setup-java#supported-distributions
https://blog.adoptopenjdk.net/2021/08/goodbye-adoptopenjdk-hello-adoptium/

PiperOrigin-RevId: 394558213
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 87582f0..72b5d6d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,7 +63,7 @@
         uses: actions/setup-java@v2
         with:
           java-version: ${{ matrix.java }}
-          distribution: 'adopt'
+          distribution: 'temurin'
       - name: 'Install'
         shell: bash
         run: mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V